Sheet-music turner



March '24, 1925. 1,531,157

J. J. THOMPSON SHEET MUSIC TURNER Filed Jan. 5, 2 6 Sheets-Shet l JMJJIW sWg Match 24. 1925. 1,531,157

. Y J. J. THOMPSON SHEET MUS I C TURNER Filed Jan. 5, 1922 6 Sheets-Sheet 2 March 24. I925. 1,531,157

J. J. THOMPSON SHEET MUSIC TURNEP Filed Jafi. s, 1 2 e Sheets-Shes 5 79 ,aa Z3 d 3 12 4. 2. 7 Off :4 T) a;

J. J. THOMPSON SHEET MUSIC TURNER Filed "Jan. 5, 1922 6 Sheets-Sheet 4 gnuvntoz JMJJ psaig March 24, 1925.

J. J. THOMPSON SHEET MUSIC TURNER Filed Jan. 5. 1922 6 Sheets-Shet 5 March 24. 1925. 1,531,157

J. J. THOMPSON SHEET MUSIC TURNER Filed Jan. 5. 1922 6 Sheets-Sheet 6 gwugnkoz fikg v 3 g LMA/W Patented Mar. 24, 1925.

U S TATES PATENT orifice.

SHEET-MUSIC TURNER.

Applieatjlon file d .Tanuary ii, 1922.

To all whom it mag concern:

Be it known that VJAMIIS J. THOMPSON, u citizen or the United '53 ntcsot America, residing at Cincinnati, in theicounty of Hanr ilton end Eitate. of Ohio, has inrented new r nd useful Improvements in Sheet-Music Turners, of which the following is a specification.

The object of'the inventionis to provide.

:1 music lee] turner, purtici'ilarly designed for use in connection with sheet rnusi" and" adopted for construction independently of w d snitziblefo application to thedtsk or n sicirncl: of a piano, orgun, or similar 1 ed instrument or to an orchestral music n e (L rd or rearward in the progress. of theperi with the minimum ofnioveinent ef ort upon he pert oi t-l'iepertcriner or operator with the minimum of time ex icnditure incident to the operation thereof, t e end that the hand of the operator ar delivered tot-he least possible extent:

'ti'oni the nninipulzition otth'e instrument; end h these gene *el ob ects;1n View the invention consr s in a construction and 0" +3 M 'q r w 1 Minion-rather or Dal s 0 nine 1 ii pierellet enib idinient is shown in the accompanying (trainings, wherein Figure l is a front View partly broken r ot-n. structure.embodying the inveninure 2 is it side \lGW partly in section of sn 2: Figure is a horizontal section taken on a plane nst below the music rest onythe line 3-3 e h igure 2. c

l'in ur i t a plan View or" the rack. Figure 515 a front edge View of the-slide oilfziiOl'S. Figure View 0'; t

Q1 ii 'n es I and S are detail horizontal sections on the phtnes indicated by the lllGS T-T and of Figure 6.

TV 9 is a detail side YlGW ot the conig cam for the leaf arm.

6 an enlarged vertical sectional St'-ltb8 l,' so that its ifiil which serves as the actuator-for the leaf Serial No. 526,684.

Figure 1'0- is a. detail front View otthe upperoortion'of the binder and clamp for engagii the binder oi the music sheet Figniz, 11 is a detail sec ion on the piano indicated by the line lit-11 of Figure -10.

Figure- 12 is a detail plan new of ,he no Uniting ceiniage,

Figure is ii 1 the phineindicated by Figure FiQH'l'G -1l is LL tetL-cil vi by which theepeiutino' Figure-lS'iS-elside ixewpzirt 3 showing the suoplennntol hous ng rzi-i d,

permit of the closing'of the keyboard of the, instrument;

Figure 16 is a detail perspective RlQW showing the leaf turning arnr.

nigure 1'7 iljSlD'lliilT'VlCV" of theslide bar.

perspective view oi Figure 18 is a detail is connected operatthe rec :ing lever zinc ing link.

l igiu-re 19 'is a-detuil perspective xii-cw showing one of the rockers worried bf,- the slide bar end-the fixed pin by which the r *cher is actuated;

Figure is adetuil perspective View showing; the clutch shifter;

re 21. is-zisiinihirview of one of the separators tor co-operutivc zic ion with the leaf turning arm;

plztcen'ient Off 118 IHUSlC'SlIBGt, and an upright binder bar pref ably hinged as indicated at to the base so as t the inclination of the instrument r 2i clamp 25' at its upper end to e; 1 instrument rncl; a port otnn ingly mounted binder bar and held in place by guide screws or bolts 27, said binder bar being provided with a binder clam 28 for engaging the fold or binding of the musical composition to hold it in proper position upon the rack and guard against displacement by the movement of the leaf turning elements thereof as hereinafter fully disclosed. The binder clamp in the construction illustrated consists of yielding, resilient strips 29 having complemental hearing or gripping elements 30. Arranged at the upper end of the binder clamp is a transverse guide 31 and secured in engaging relation with the fold or binder of a. composition is a locking means 82 consisting of an element pivotally mounted as at 33 upon one of the clamp elements 29 and engaged with apin 33' on the other element. Obviously by disengaging .the lock it is possible to spread-or separate the elements of the binder clamp to insert the fold of the sheet music whereupon the reengagement of the lock will serve to bind the sheet in place and permit the leaves thereof to be turned successively either forward or backward, as: the rendition of the composition may require. To prevent forward displacement or premature folding of the leaves of the compositionthe pivotal separators 3d may be arranged at the front edge of the rest between the center and eX- tremities thereof, but as these elements in the construction illustrated perform other functions having a specific relation with the turnin mechanism a articular descriation thereof will appear hereinafter.

Tie leaf turning arm 35 is carried by a turning head 36 mounted loosely upon the operating spindle 37 for angular or turning movement with respect thereto and having a thrust bearingin the cam. hereinafter described. Rota'ry motion is communicated to the turning head and thereby to the leaf turning arm through a lost motion connec tion with the operating spindle which, at its upper end, is provided with a disk 38 in which is formed an arcuate slot 39 traversed by a pin 37 mounted in the turning head. The leaf turning arm, in addition to the swinging movement relative to the spindle as an axis, has an oscillatory or swinging movement in a vertical plane on a horizontally disposed pivot 40 carried by the turning head eccentric to the axis of the latter. The oscillatory movement of the leaf turning arm is controlled by a cam.

disk is provided with a cam rim f? having diametrically opposite cam faces as for engagement with a lug 49 depending from the leaf turning arm.

W hen the clutch member has been actuated, so that the cam disk is simultaneously actuated upon any rotary or turning movement being imparted to the spindle. 37, this movement is not immediately communicated to the turning head, because of the lost motion connection above referred to. Therefore, one of the cam faces i8 moves relatively to the lug 9 with the result that the leaf turning arm is elevated to effect engagement with a leaf about to be turned, the arm swinging on the pivot l0 as a center and assuming the position indicated in dotted lines in Figure 6. l/Vhen the leaf turning arm shall have been elevated so that the bottom of the lug lies in the plane of the upper edge of the cam disk 48, the disk 38 will have turned a suflicient distance for the pin 37' to .have engaged in one end of the slot 39. Thereupon, the turning head 36 is carried around with the disk 38 and the shaft 37 and rotary movement of the leaf turning arm is secured. The first or oscillatory movement of thearm engages it with the leaf and thereafter the swinging or rotary movement effects the turning of the leaf. Y

The spindle 37 and the clutch member through which motion is communicated to the cam are adapted for actuation in opposite directions in the operation of the device, and to accomplish this operation there is provided in the construction illustrated a pair of drums 50 and 51, the latter of which is rigid with a sleeve 52 forming the hub of a clutch member 53 which is complemental to the clutch member 43 and consists in a disk having segmental keyways or peripheral cutaway portions 54 and 55 adapted for respective engagement by keys 56 and 57 consisting of screws carried by the clutch member 43 which is of inverted cup form, said keys being in different transverse planes, so that the keyways of the clutch member are adapted for engagement with the keys in different longitudinal adjustments relatively of the clutch members 43 and 53. For example when the clutch member 43 is in its depressed position as shown in .lr igure 6, in which it is yieldingly acid by the springs $5, the key 57 is in tl e plane of the clutch member and is in engagement with the keyway and therefore in position to communicate rotary motion from the clutch member 53 to the clutch member 8 to turn the cam in the direc ion indicated by the arrow in Figure l to in turn cause the cam to raise the leaf turning arm 35 so that the jaws 35 thereof may engage a leaf to be turned.

Motion is communicated to the drums 5O and 51 from a't'r'avell'er 58 which ismounted for horizontal sliding movement parallel with "the length of the rack in a guide formed by the housing and carries the flexible runners 59" and 60 which have intermediate coils or bights extending around the drums odand 51 respectively. These run-- new are kept in tension by means ofthumb nuts 61 and 62 and as the loops orbights thereof arereversedin position relatively it will be obvious that a movement ofth'e traveller'inthe direction indicated by the arrow in Figure 12 for'example will impart rotary motion tothe'drum in a direction necessary to turn the leaf 35 from the positionat the right shown in Figure 1 to a corresponding position to the left and thus will turn a leaf engaged thereby in a direction necessary to proceed with'th'e performance of the music progressively. A movement of saidtraveller 58 in the same direction,-however, owing to the reversed position of the runner will turn the drum 51 in the opposite direction, or in the direction indicated by arrow on the cam in Figure 1. The drum 51 is preferably of smaller diameter than the drum 50 to cause it to have a more rapid movement than the latter with the same movement of the traveller, and by reason of this differentiation of movements, together with the lost motion or pin and slot connection between the spindle and the head 36, receives a motion necessary to raise the leafturningarm through the cam 48, into engaging relation with the leaf, before the swinging or leaf turning movement of said arm is commenced.

The purpose of the two-way engagement of the clutch represented by the members a3 and 53 by which motion is connnunicated from the drum 5l'to the cam, is to permit of a corresponding movement of the parts of the mechanism in turning a music leaf backward or from the left'to the right for purposes of repeating passages of the music score, and as a means of'adjusting the axially movable clutch member or sleeve43 so as to bring the key 56 into engaging relation with the keyway 54, there is employed a clutch shifter 63 movable upon the hub 52 in adirection parallel witlrthe axis of the clutch and in contact with the rim of the clutch member as, through a cam 64: consisting of a slot in a shifting rod 65 mounted for forward and rearward sliding movement and forming the supporting spindle of an operating arm (36 which is provided in an exposed position close to the plane of the fingerboard of the instrument with a finger rest or grip 67 for pressure by the performer when it isnecessary to turn a'leaf. This operating arm is loosely mounted upon the shifting rod or spindle 65 and carries a reversing arm 68 of bell-crank form yieldingly held in its normal position by a sp'ring69 and connected by a rod 70 with a button 71 which serves-as acamto engage a-di-sk 72 fixedtothe rod 65 and communicate motion to said rod,-in opposition to the p-ressuleof a return spring 7 3 and in a direction necessary to cause the cam 64 to raise theclutch shifter. In other words Whereas the depression of the freeend of the hand lever'66 is designed by a movement of the traveller 58 from right to left to'communicate reverse movements to the drums 5O andolto bring the leaf turning arm into engagement with a leaf and swing the arm from a position at the right to a position at theleft and thus turn the leaf in the direction of forward progress of'the rendition'of the composition a corresponding movement of the hand lever'by pressingupon the auxiliary lever 68 and thereby shifting the rod 65 forwardly will raise theshifter-plat-e 8 and thereby readjust the clutch members to cause a reversal of the operation and thus turn a leaf from the left'to the right.

The illustrated'means for communicating motion from the hand lever to the traveller consists of a rocking'lever T4 fulcrumed at 75 and having a pin '76 engaged with the traveller by introduction between parallel ribs 77 on thefront'wall of the traveller, a link '78 extending from the hand lever to the lower arm of the rocking lever, and a return spring 73 being connected with said lower arm of the rocking lever to yieldingly hold the same in its normal position.

The leaf'turning arm consists of parallel spring elements 35 each of which terminally carries an upturned jaw 35" and each of which carries a depending stop lug 35, the lugs 35 being arranged out of transverse alignment and being adapted for respective engagement with stop pins'35 and 35 as the turning arm is alternately swung to the left and to the right. 'Assuming that the leaf turning arm is being swung from the normal position shown in Figure 1 at the right to the reversed position to turn a page of the composition in the direction of progressive performance thereof, the engagement of oneof the'lugs 35 with the stop pin 35 will serve to spread the elements and thus separate the jaws to liberate the leaf. A reverse swinging movement of the leaf turning arm will bring the other stop lug 35 into engagement with the stop pin 35 and again will open the jaws to en-' gage a leaf which may be carried thereby.

In order that the engagement of the jaws with a leaf to be turned may be secured with accuracy and certainty there is employed a slide bar 79 movable by the main spindle 37v through the disk 38 which as above noted is secured to said spindle by a link 80 having terminal pivotal connection respectively with the disk and slide bar, and

. right and being of corresponding construction so that. a detailed description of one will sufiice for both. The type of separator illustrated in the drawing embodies a rocirer of bell-crank form having a spreader arm 82 and a separator arm 83, with the axis of movement represented by the spindle 84. The spreader arm 82 is tapered transversely and the jaws 35 of the turning arm are arranged inthe path of swinging movement of said arm when the operating spindle 3T first receives its movement from the operation of the hand lever 66, the connections between the slide bar 79 and the spindle of the separator being such as to produce such movement, and the action of the spreader arm 82 is to pass downward between the jaws 85 and spread the latter in position to receive the lower edge of a sheet or leaf of the composition. The slide bar 79 at each end carries a shoe 85 having a yielding adhesive contact cushion or face 86 of rubber or its equivalent adapted to be pressed against the surface of the leaf or sheet of music to be turned,the pressure of the shoe being rearward against the foremost leaf or sheet and such pressure being opposed by the rear rest flange 22 of the rack seat. As the movement of the slide bar is from right to left or in the direction indicated by the arrow in Figure 3, when for examplethe page is to be turned forward or in the direction of progressive performance, it is obvious that the contact of the shoe with the sheet during the said movement of the slide bar will tend to bow the sheet or leaf forwardly between the point of contact of the cushion with the sheet and the center or binding element of the composition which is held rigid by the binder clamp 28. As a separator turns therefore in the direction indicated by the arrow thereon in Figure 1 to cause the spreader arm 82 to spread the jaws 35* of the leaf turning arm (and as the slide bar is moving to cause the shoe 85 to bow the leaf or sheet) the separator arm 83 of the rocker passes up behind the front sheet or leaf or between the forwardly bowed front sheet and the next sheet so as to positively effect the re-' quired separation with the edge of the separated or front sheet or leaf in the plane of the space between the jaws 35 which have been spread as above indicated. At this stage in the operation of the clutch of which one member has been moving idly by reason of the slot or cut away segment 54, communicates motion to the cam to cause its cam face 448 to act on the lug a9 and thus pivot-ally raise the leaf turning arm to bring its jaws 35 into engagement withthe separated leaf and withdraw said jaws from engagement with the spreader arm 82 of the rocker 81 so that said jaws 35 snap together and clamp the leaf to the end that the swing movement ofthe leaf turning arm willcause it to carry withv it the leaf until having approached the turned position when the leaf is released by the contact of one of the lugs 35 with the stop pin 35 In the construction illustrated the means for communicating.motion from the slide bar to the rockers constituting the separators consist of travellers 8'7 secured tothe slide bar and provided with runners 88 having looped intermediate portions extending around drums 89 attached to the spindles 84-. The runners are provided as in the case of those used in the operating mechanism for the main spindle, with adjusting nuts 90 by which the tension thereof may be taken up as required.

The bearing shoes 85 which as above noted are carried by opposite ends of the slide bar 79 are carried by rockers 90 pivoted as at 91 to forwardly directed terminals of the slide bar, said rockershavin'gtapered cam arms 93 for engagement with pins 9% which serve to control the positions of the shoes. In other words referring to the right hand, shoe which comes into operation when the leaf is to be turned forward or in the direction of progressive performance, the movement of the slide bar in the opposite direction to that indicated by the arrow in Fig. 3 serves to bring the cam arm 93 into engagement with the pin 94 and withdraw the shoe from engagement with the leaf or sheet, whereas movement in the direction of the arrow as when a leaf is about to be turned, and when it is desired to utilize the effect of the shoe, will disengage the cam 93 from the pin 9% and permit the shoe to come into contact with the sheet or leaf through the action of a spring 95 or its equivalent located adjacent to the pivotal mounting of the shoe carrying rocker.

In view of the desirability of having the hand lever arranged with its finger pieces as close to the finger board of the instrument as possible to minimize the distance required for movement of the hand with relation to the keyboard in operating the same, and at the same time in order to provide for supporting the apparatus so that closing of the roller board or keyboard cover of the instrument may not be prevented or interfered with, it is preferable to arrange the operating mechanism including the hand lever and rocker by which motion is communicatedtherefrom to the traveller in a pendent supplemental housing 98 pivotally mounted as by the thumb screws 97 to the main housing or base 20 which locates the axis of said pendent frame in the horizontal plane of theshifter rod 5 upon which the hand lever is fulcrumed. The rocker 74; which has engagement as above described with the traveller 58 by means of a pin 76 seated between the flanges 77 will t-hereforeswing out of engagement as the said pendent frame is turned inward on the thumb screws 9'? as an axis, and will be restored to engagement when the pendent frame is returned to its normal position without special manipulation or adjustment. The shifter rod is provided in axial aligmnent with the thumb screws 97 with a joint 98 thus permitting it to bend to accommodate the swinging movement of said supplemental pendent housing.

Having described the invention, what is claimed as new and useful is:-

1. A music leaf turner having a desk, aleaf turning a-rm mounted for swinging movement on the desk, a manually movable actuating member, a mainispindle operative ly connected with the actuating member and having a lost motion connection with the turnln arm and means for movin said a 3 as turning arm perpendicularly to its path of swinging movement durii g" the interval of operation of the lostmotion connection to effect engagement of the arm with a leaf to be turned, said arm being provided with leaf engaging elements yieldingly impelled towards each other, and means for spreading said elements during the interval of perpendicular movement of the arm.

'2. A music leaf turner having a desk, a leaf turning arm mounted for swinging movementon the desk, a manually movable actuating menib .r,.a main spindleoperatively connected with theactuating member and having a lost motion connection with the turning arm, and means for moving said turning arm perpendicularly to its path of swinging movement during the interval of operation of the lost motion connection .to effect engagement of the arm with a leaf to be turned, said arm being provided with leaf engaging elements yieldingly impelled toward each otheig'and means for spreading said elements during the interval of perpendicular movementiof the arm, and a desk carried impact element :for engagement with the arm to effect separation of the leaf engaging elements for the release of an interposed leaf.

3; A music leaf turner having a desk, a leaf turning arm mounted for swinging movement, a manually movable actuating member, a main spindle operatively connected with the actuating member and having a lost motion connection with theturning arm,.and means'for movingthe said arm perpendicular to its path of swinging movement to effect engagement thereof with a" leaf to beturned, said leaf turning arm having terminal yieldingly closed sheet engaging jaws,-in combination with means actua'ble by said spindle for spreading the jaws as they approach. the leaf' 4. A music leaf turner having a desk, a leaf turning arm mounted for swinging movement, a manually movable actuating member, a main spindle operatively connected with the actuating member and having a lost motion connection with the turning arm, and means for moving the said arm perpendicular to its path of swinging move ment- .to effect engagement thereof with a leaf to be turned, said leaf turning arm having terminal yieldingly closed sheet engaging jaws, in combination with means notuable by said spindle for spreading the jaws as they approach the leaf and including a rocker having a spreading a ..1 to pass between the said jaws.

5. A music lea-f turner having a desk, a leaf turning arm mounted for swinging movement, a manually movable actuating member, amainspindle operatiiqely connect ed with the actuating member and liaving a lost motion connection with the turningarm, and means for moving the said anm perpendicular to its path of swinging movement to effect engagement thereof with a leafto be turned, said leaf turning arm having terminal yieldingly closed sheet engaging jaws, in combination with means actuable by said spindle for spreading the jaws as they approach the leaf and including a rocker having a spreading arm to pass be tween the said jaws, and a separating arm to pass in rear of the outermost leaf of the composition.

6. A music leaf turner having a desk, a "leaf turning arm mounted for swinging movement, a manually movable actuating member, a main spindle.operatively connected with the actuating member andthaving a lost motion connection with the turning anm, and means for moving; the said arm perpendicular to its path .of'swinging movement to effectcngagement ther of with a leaf to be turned, said turning arm having -termi nal yieldingly closed sheet engaging jaws, in combination with a rocker ha fng a j aw spreading arm and (a leaf separating arm, a leaf bowing device having; a shoe movable toward thecenter of the desk, and connections between said rocker and shoe carrying means and said spindle.

7. A music leaf turner having a (lESli, a lea f turning arm mounted for swii e ing movement, a manually movable actuating member, a main spindle operatively connected with the actuating member and having a. lost motion connection with the turning arm, and means for moving the said arm perpendicular to its path of swinging movementto effect engagement thereof with a leaf to be turned, incombination with a sheet bowing'device consisting of a rocker having a frictional shoe for contact with the surface of a sheet, a trip pm 1n the path of a cam on said rocker for withdrawing the .shoe from contact with the sheet, and'a car- "161 for the rocker movable toward the center of the desk and operatively connected with said spindle.

8. A music leaf turner having a desk, a

leaf turning arm mounted for swinging movement, a manually movable actuating member, a mam spindle operatively connected wlth the actuating member and having alost motion connection with the turnturning arm mounted for swingingmovement, a manually movable actuating memher, a main spindle having a lost motion connection with the turning arm, a cam mounted to rotate in ppposition to the spindle and impart perpendicular.movementjto the turnmg arm during'the interval of operation of the lost motion connection and operative connections between the cam' and manually actuating member and between the spindle and actuating member.

r 10. A music leaf turner comprising a leaf turning arm mounted for swinging movement, a manually movable actuating memher, a main spindle having a lost motion connection with the turning arm, a cam mounted to rotate 1n opposition to the spindle and impart perpendicular movement to the turning arm curing the'lnterval of operation of the lost motion connection and operative connections between the cam and manually actuatlng member and between the spindle and actuating member, said connections including :a selectively operable clutch between the actuating member and the cam.

, 11. Amusic leaf turner comprising a leaf turning arm mounted for swinging movement, a manually movable actuating memher, a main spindle having a lost motion connection with the turning arm, a cam mounted to rotate in opposition tothe spindle and impart.perpendicular movement to the turning arm during the interval of operation of the lost motion connectlon and operative connections between the cam and manually actuating member and between the spindle and actuating member, and a depressible hand lever for imparting longitudinal movement to said manually actuable member.

12. A music leaf turner comprising a leaf turning arm mounted for swinging movement, a manually movable actuating member, a main spindle having a lost motion conf nection with the turning arm, a cam mounted to rotate in opposition tothe spindle and impart perpendicular movement to the turning arm during theinterval of operation of the lost motion connection and operative connections between the cam and manually actuating member and between the spindle and actuating member, said connections including a selectively operable clutch between the actuating member and the cam, and a depressible hand lever for imparting longitudinal movement to said manually actuable member and provided with an auxiliary lever for the selective operation of said clutch. p

13. A music leaf turner having a leaf turning arm mounted for swinging move- .ment, a manually actuating member operatively connected with the leaf turning arm, said leaf turning arm having transverse yieldingly closed sheet engaged jaws, a spreading arm operatively connected with the manually actuating member and disposed to separate the jaws of the leaf turning arm to permit leaf engaging operation thereof. 7 r

14; A music leaf turner having a leaf turning arm mounted for swinging movement, a manually actuating member operatively connected with the leaf turning arm,

said leaf turning arm having transverse yieldingly closed sheet engaged jaws, a spreading arm operatively connected with the manually actuating member and disposed to separate thejaws of the leaf turning arm to permit leaf engaging operation thereof, said leaf turning arm being provided with depending stop lugs arranged in transverse alignment, and stop pins-for impact with said lugs to separate the leaf engaging jaws to permit'leaf releasing movement thereof. J

15. A music leaf turner having adesk, a leaf turning arm mounted for swinging movement on the desk, an actuating member moved longitudinally of the desk, a main spindle operatively connected with the actuating member and havinga lost motion connection with the turning arm, a supplemental pendent housing having a hinged connection with the desk, and an actuating lever carried in said housing and operatively connected with the actuating member.

16. A music leaf turner having a deslr, a

leaf turning arm mounted for swinging movement on the desk, an actuating member longitudinally movable of the desk, a main spindle operatively connected with the actuating member and having a lost motion connection with the turning arm, means'for moving the turning arm perpendicular to its path of swinging movement to effect engageactuating member, and an auxiliary lever ment thereof with a leaf to be turned, clutch carried by the actuating lever and operacontrolled connections between said means tively connected with said clutch controlled 10 and said actuating member a supplemental connection.

5 pendent housing foldably connected with the In testimony whereof he afiixes his signadesk, 21 depressible hand lever carried in said tui'e. housing and operatively connected with the JAMES J. THOMPSON. 

